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Related Experiment Videos

Biomedical results of the Skylab Program.

E L Michel1, R S Johnston, L F Dietlein

  • 1Lyndon B. Johnson Space Center, National Aeronautics and Space Administration, Houston, Texas, USA.

Life Sciences and Space Research
|January 1, 1976
PubMed
Summary

Skylab missions studied human adaptation to space. Astronauts adapted to zero gravity, but experienced space motion sickness and physiological changes requiring further research for long-duration space flight.

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Area of Science:

  • Space medicine
  • Human physiology in space
  • Life sciences in microgravity

Background:

  • Skylab, the USA's fourth manned space project, provided the first in-depth study of human responses to spaceflight.
  • Previous missions (Mercury, Gemini, Apollo) laid the groundwork for extended space exploration.

Purpose of the Study:

  • To investigate human adaptation to the space environment during extended missions.
  • To understand physiological changes and readaptation to Earth's gravity post-flight.

Main Methods:

  • Conducting extensive medical investigations during three Skylab missions with increasing durations (28, 59, and 84 days).
  • Monitoring various body systems to assess physiological responses to microgravity.

Main Results:

  • Demonstrated human adaptation to zero gravity, enabling useful work during long-duration space flight.
  • Documented significant physiological changes including space motion sickness, reduced orthostatic tolerance, mineral/nitrogen loss, and decreased exercise tolerance.

Conclusions:

  • While adaptation occurs, specific physiological challenges necessitate further research.
  • Understanding and counteracting these responses are crucial for enabling unlimited human exposure to space flight.

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